### Derive An Expression For The Critical Speed Of A Ball Mill

Derive Expression Of Critical Speed Ofball Mill Derive Expression Of Critical Speed Ofball Mill We have derive the equation of critical speed of ball millThe formula to calculate critical speed is given below N c 42305 sqtDd N c critical speed of the mill D mill diameter specified in meters d diameter of the ball In practice Ball Mills are driven at a speed of 5090 of the critical speed the